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  1. 紀要掲載論文
  2. 北見工業大学研究報告
  3. Vol.22

Oxygen Species Regulating Carbon Monoxide Oxidation with Multi-Reaction Pathways over a Silver Catalyst*

https://kitami-it.repo.nii.ac.jp/records/6668
9cd3f506-83b5-4fb7-842c-18ceb97fa69d
名前 / ファイル ライセンス アクション
22-2-2.pdf 22-2-2.pdf (4.9 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2007-04-09
タイトル
タイトル Oxygen Species Regulating Carbon Monoxide Oxidation with Multi-Reaction Pathways over a Silver Catalyst*
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
著者 Tohru, KANNO

× Tohru, KANNO

WEKO 33638

Tohru, KANNO

Search repository
Masaki, HAKOZAKI

× Masaki, HAKOZAKI

WEKO 33639

Masaki, HAKOZAKI

Search repository
Masayoshi, KOBAYASHI

× Masayoshi, KOBAYASHI

WEKO 33640

Masayoshi, KOBAYASHI

Search repository
抄録
内容記述タイプ Abstract
内容記述 The reaction route of CO oxidation by nitrous oxide and oxygen over a silver catalyst has been studied from the analysis of their transient behavior at 20℃. Half of the total surface sites are active for the adsorption of oxygen and one third of them are active for the decomposition, of N_2O, indicating the heterogeneity of the silver surface. At a reaction steady state of CO oxidation in the N_2O-CO relation and the O_2-CO systems, the surface in the N_2O-CO reaction is in a more reduced state than that in the O_2-CO reaction. The activation energy is evaluated to be 14kcal/mol for the O_2-CO reaction and 10kcal/mol for the N_2O-CO reaction, suggesting a different rate controlling step between both reactions. The adsorbed oxygen (presuming diatomic oxygen) from gaseous oxygen, not from N_2O, is responsible for the oxidation of CO. In a Eley-Rideal type mechanism, the rate of CO oxidation with diatomic oxygen is estimated to be about fourteen times faster than that of N_2O decomposition. The graphical analysis of transient response curves obtained in the two reactions leads us to a conclusion that the formation rate of the diatomic oxygen species is a sort of rate-controlling step in the N_2O-CO reaction.
書誌情報 北見工業大学研究報告

巻 22, 号 2, p. 255-266, 発行日 1991-03
フォーマット
内容記述タイプ Other
内容記述 application/pdf
著者版フラグ
値 publisher
出版者
出版者 北見工業大学
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